Lock.



M. GRGICH.

LOCK.

APPLICATION HLED AUG.31, H714.

1,184,45. Patented May 23,1916.

WITNESSES INVENTOR I I. [1. Gr Lc W fi L MATO GRGICH, OF SOUTH CHICAGO, ILLINOIS.

LOCK.

Specification of Letters Patent.

Patented May 23, 1916.

Application filed August 31, 1914. 9 Serial No. 859,437.

To all whom it may concern Be it known that I, Ma'ro GRGICH, a subjeet of the King of Hungary, residing at South Chicago, 1n the county of Cook and State of Illinois, have invented certain new and useful Improvements in Locks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to looks and has for its object to provide a device of such class, which is comparatively simple in its construction, strong, durable, eflicient in its use, designed for any purpose where it is found applicable, having means to prevent the opening thereof unless one is familiar with the manner of manipulating the lock, readily set up, and inexpensive.

With the foregoing and other objects in view the invention consists of a novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views: Figure 1 is an elevation of a lock in accordance with this invention. Fig. 2 is a vertical sectional view. Fig. 3 is an inverted plan view of a barrel.

Referring now to the drawing, 1 and 2 indicate relatively movable parts such as a door or other hingedly mounted closure and its cotiperating frame, respectively. Fixed to the frame 2 is a keeper 4, let into the frame and provided with a threaded bore 7. The keeper is held in place by any suitable means, such as screws or bolts 8 and 9.

Secured to the swinging closure 1 by suitable fastening means 15 is a strap 16 which is preferably formed of two sections hingedly connected as at 18, and upon the swinging portion 17 of the strap I arrange the barrel of my improved lock.

27 indicates the barrel which is preferably cylindrical and closed at its inner end by the member 17 and at its outer end by a head 28. Arranged within the barrel is the locking member or bolt 21. This is preferably eo-axial with the barrel and is threaded to engage within the threaded bore 7 of the keeper. The bolt 21 is provided with a cylindrical head 20 which is formed with a socket 22 to receive the end of a key 25. Parallel guides 19 are provided within the barrel for the head 20 and these are equipped with stops 26 to limit the movement of the bolt.

To unlock the device the key is engaged within the socket in the head of the bolt 21 and the bolt is rotated to detach the same from its threaded connection with the keeper. During this operation the guides 19 maintain the bolt in proper alinement.

Suitable means are provided to prevent tampering with the lock and it is to this end that I provide the barrel 27 and equip the same with my improved safety device. The head 28 of the barrel is provided with a key hole 29 of proper shape to admit of the insertion of the key and mounted upon the outer face of said head is a shiftable plate 33provided with a corresponding opening 34 which, when said plate is in one position registers with the key hole 29 and admits of free passage of the key. To shiftably attach the plate 33 to the barrel head I provide the head 28 with oppositely disposed arcuate slots 30 and 31 which receive headed pins 35 and 38 on the plate 33. The pin 35 is preferably rigidly secured to the plate 33 but the pin 38 is loosely mounted in a radial slot 37 formed in said plate. The key hole 29 and aperture 34: are brought into register when said pins are at one end of the slots 30 and 31 and at the opposite end of the slot 30 I provide a radial enlargement 32 which registers with the radial slot 37 when the plate is shifted to the opposite limit of its movement. The pin 38 is then free to be moved inwardly into the said enlargement 32 which locks the plate 33 against movement.

Mounted upon the pin 38 is a swinging member 41 preferably formed of thin spring metal and provided on its under face with a detent 4-2 which engages within the aperture 34. only when the pin 38 is at the innermost end of the slot 37 This effectually secures the device against being successfully tampered with except by those familiar with the device, as to insert the key it is first necessary to swing the member 41 to disengage the detent from the aperture 34: then to move the pin 38 radially outwardly and then shift the plate until the pins 35 and 38 are at the opposite extremities of the slots.

The key hole guard above described forms and inelosing said head, and a key capable of being inserted into said barrel and engage in the head for shifting the locking member, said barrel provided with an opening for the entrance of the key.

2. In a hasp lock, a casing provided with a key hole in one Wall and a bolt aperture in the opposite wall, a bolt in said casing adapted to be projected through said bolt opening and having its inner end provided with key engaging means, the opposite end of said bolt being threaded, and a keeper provided with a threaded aperture to receive the threaded end of said bolt, substantially as described.

3. In a hasp look, a casing provided with a key hole in one wall and a bolt aperture Gupta: 0! this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

in the opposite Wall, a bolt in said casing adapted to be projected through said bolt opening and having its inner end provided with key engaging means, the opposite end of said bolt being threaded, guides in said casing for said bolt, and a keeper provided with a threaded aperture to receive the threaded end of said bolt, substantially as described. 7 4:. In a hasp look, a casing provided wit a key hole in one wall and a bolt aperture in the opposite wall, a bolt in said casing adapted to be projected through said bolt opening and having its inner end provided with key engaging means, the opposite end of said bolt being threaded, guides in said casing for said bolt, said guides being provided with stops'to limit the inward movement of said bolt, and a keeper provided with a threaded aperture to receive the threaded end of said bolt, substantially as described. 7 V

In testimony whereof I afi'ix my'signature inthe presence of two witnesses. f

MA'IO GRGICH. Witnesses:

JOHN MATUSHEK, JOHN H. CORBETT.

Washington, D. G. 

